211678971

素因数分解:

$3^1\times 7^2\times {\mathrm{971}}^1\times {\mathrm{1483}}^1$

素因数の和:2471

約数の個数: 24

約数和(自身を含む): 328878144

約数和(自身を除く): 117199173

約数列:

[1, 3, 7, 21, 49, 147, 971, 1483, 2913, 4449, 6797, 10381, 20391, 31143, 47579, 72667, 142737, 218001, 1439993, 4319979, 10079951, 30239853, 70559657, 211678971]

約数ペア:

[(1, 211678971), (3, 70559657), (7, 30239853), (21, 10079951), (49, 4319979), (147, 1439993), (971, 218001), (1483, 142737), (2913, 72667), (4449, 47579), (6797, 31143), (10381, 20391)]